At least 15 people were injured on wednesday when an unidentified attacker lobbed a grenade into a mosque during evening prayers in Dera Ismail Khan in Pakistan's troubled North West Frontier Province.
A large group of people were offering evening prayers at the mosque at Mohallah Kanariawala in Dera Ismail Khan when the attacker hurled the grenade and escaped by taking advantage of darkness, police said.
The injured were rushed to hospital and the condition of some of them was described as critical. Police cordoned off the area and launched a search for the attacker.
President Asif Ali Zardari, currently on an official visit to the US, and Prime Minister Yousuf Raza Gilani condemned the attack and directed authorities to bring the culprit to justice.
No group claimed responsibility for the attack though the city has witnessed sectarian tensions in the recent past.